KA78L10AZBU

KA78L10AZBU is a linear voltage regulator from PMIC (Power Management IC) family. It is commonly used for stabilizing the source voltage in analog circuits. The regulator, designed for a maximum operating voltage of 10 volts, has excellent temperature and input voltage variation characteristics. It also provides an accurate adjustable output voltage ranging from 4 to 10 volts.

Overview

KA78L10AZBU is a linear voltage regulator designed to offer excellent performance for a wide range of applications. It is ideal for applications requiring a low cost, low noise voltage regulator. This device provides a 3-terminal adjustable output voltage range of 4 to 10 volts with a maximum output current of 500 mA. This regulator operates at a power dissipation of a maximum of 2W (at 2A load current) and a maximum junction temperature of 150 °C. It features a shutdown pin which can be used to shut down the regulator once the output voltage drops below 4V. The regulator also offers excellent temperature coefficient shifting the whole range to different points with the addition of an external resistor. It is available in the industry standard TO-92 package with a wide range of pin pitch to meet various design objectives.

Application Field

KA78L10AZBU can be used in a variety of applications that require a stable source voltage. It is suitable for low-noise, low-cost power supplies. Its excellent tolerance to input voltage variation and temperature make it ideal for use in video circuits, TV sets, instrumentation and consumer electronics. Its low power dissipation capability and good noise performance allow it to be used in medical equipment and test and measurement systems. Its adjustable output voltage range makes it ideal for use in audio power amplifiers, portable electronics such as calculators, digital watches and cellular phones.

Working Principle

The working principle of the KA78L10AZBU voltage regulator is based on the principles of linear regulators. It uses an N-channel MOSFET to regulate the output voltage. The MOSFET is controlled by a voltage error amplifier. The error amplifier senses the output voltage and compares it to the feedback voltage. If there is a difference between the two, the error amplifier adjusts the gate voltage of the MOSFET until the output voltage matches the feedback voltage. The output voltage is adjusted by varying the voltage divider connected to the feedback node of the error amplifier.

The KA78L10AZBU also has additional features such as a thermal shutdown circuit, a low dropout voltage, and reverse-battery protection. This ensures that the regulator can withstand high current and temperature variations without damage, and provides reverse-battery protection against accidental connection of a reverse-polarity power supply.

Conclusion

All in all, the KA78L10AZBU linear voltage regulator is an excellent choice for voltage stabilization applications requiring a low cost, low noise and adjustable output voltage. With its wide range of features such as adjustable output voltage, low power dissipation, reverse-battery protection, and excellent temperature and input voltage tolerance, it can be used in a variety of applications including portable electronics, audio amplifiers and medical equipment.